From owner-freebsd-current Fri Feb 7 17:33: 6 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 87E6337B401; Fri, 7 Feb 2003 17:33:04 -0800 (PST) Received: from rwcrmhc52.attbi.com (rwcrmhc52.attbi.com [216.148.227.88]) by mx1.FreeBSD.org (Postfix) with ESMTP id 02DBE43FA3; Fri, 7 Feb 2003 17:33:04 -0800 (PST) (envelope-from julian@elischer.org) Received: from interjet.elischer.org (12-232-168-4.client.attbi.com[12.232.168.4]) by rwcrmhc52.attbi.com (rwcrmhc52) with ESMTP id <2003020801330305200k0m6ne>; Sat, 8 Feb 2003 01:33:03 +0000 Received: from localhost (localhost.elischer.org [127.0.0.1]) by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id RAA21716; Fri, 7 Feb 2003 17:33:02 -0800 (PST) Date: Fri, 7 Feb 2003 17:33:01 -0800 (PST) From: Julian Elischer To: Hiten Pandya Cc: John Baldwin , FreeBSD current users Subject: Re: vnode locking question. In-Reply-To: <20030207172327.GA23165@unixdaemons.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Fri, 7 Feb 2003, Hiten Pandya wrote: > On Thu, Feb 06, 2003 at 10:53:08AM -0800, Julian Elischer wrote the words in effect of: > > > > > > On Thu, 6 Feb 2003, John Baldwin wrote: > > > > > > > > On 05-Feb-2003 Julian Elischer wrote: > > > > > > > > Is there ever a case when a vnode is locked for longer than the duration > > > > of the syscall that locked it? > > > > > > Shouldn't be. That would be a bug I believe. Userland threads should > > > never hold any kernel locks. > > > > That's what I think too but I just thought I'd ask.. > > (NFS worries me a bit) > > > > If It did, wouldn't that give a panic() with something like: > "panic: mutex held on exit to userland..." > > ... or something like that? lockmgr loacks are not the same as mutexes (though they should be merged some time.) > > -- > Hiten Pandya (hiten@unixdaemons.com, hiten@uk.FreeBSD.org) > http://www.unixdaemons.com/~hiten/ > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message